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Okouchi, Hiroto; Lattal, Kennon A. – Journal of the Experimental Analysis of Behavior, 2006
Four pigeons were exposed to two tandem variable-interval differential-reinforcement-of-low-rate schedules under different stimulus conditions. The values of the tandem schedules were adjusted so that reinforcement rates in one stimulus condition were higher than those in the other, even though response rates in the two conditions were nearly…
Descriptors: Stimuli, Reinforcement, Intervals, Animals
Stone, George C. – Percept Mot Skills, 1969
Descriptors: Behavioral Science Research, Cognitive Ability, Color, Intelligence
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Odum, Amy L.; Ward, Ryan D. – Journal of the Experimental Analysis of Behavior, 2004
Recent experiments suggest that the effects of drugs of abuse on the discrimination of the passage of time may differ for experimenter-imposed and subject-produced events. The current experiment examined this suggestion by determining the effects of morphine on the discrimination of interresponse times (IRTs). Pigeons pecked a center key on a…
Descriptors: Responses, Drug Abuse, Intervals, Animals